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Original Investigation
October 2016

Association Between Distance From Home to Tobacco Outlet and Smoking Cessation and Relapse

Author Affiliations
  • 1Department of Public Health, University of Turku, Turku, Finland
  • 2Finnish Institute of Occupational Health, Helsinki, Finland
  • 3Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
  • 4School of Health Sciences, University of Tampere, Tampere, Finland
  • 5Institute of Behavioural Sciences, University of Helsinki, Helsinki, Finland
  • 6Department of Geography and Geology, University of Turku, Turku, Finland
  • 7Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
  • 8Turku University Hospital, Turku, Finland
  • 9Department of Epidemiology and Public Health, University College London Medical School, London, England
JAMA Intern Med. 2016;176(10):1512-1519. doi:10.1001/jamainternmed.2016.4535
Abstract

Importance  Reduced availability of tobacco outlets is hypothesized to reduce smoking, but longitudinal evidence on this issue is scarce.

Objective  To examine whether changes in distance from home to tobacco outlet are associated with changes in smoking behaviors.

Design, Setting, and Participants  The data from 2 prospective cohort studies included geocoded residential addresses, addresses of tobacco outlets, and responses to smoking surveys in 2008 and 2012 (the Finnish Public Sector [FPS] study, n = 53 755) or 2003 and 2012 (the Health and Social Support [HeSSup] study, n = 11 924). All participants were smokers or ex-smokers at baseline. We used logistic regression in between-individual analyses and conditional logistic regression in case-crossover design analyses to examine change in walking distance from home to the nearest tobacco outlet as a predictor of quitting smoking in smokers and smoking relapse in ex-smokers. Study-specific estimates were pooled using fixed-effect meta-analysis.

Exposures  Walking distance from home to the nearest tobacco outlet.

Main Outcomes and Measures  Quitting smoking and smoking relapse as indicated by self-reported current and previous smoking at baseline and follow-up.

Results  Overall, 20 729 men and women (age range 18-75 years) were recruited. Of the 6259 and 2090 baseline current smokers, 1744 (28%) and 818 (39%) quit, and of the 8959 and 3421 baseline ex-smokers, 617 (7%) and 205 (6%) relapsed in the FPS and HeSSup studies, respectively. Among the baseline smokers, a 500-m increase in distance from home to the nearest tobacco outlet was associated with a 16% increase in odds of quitting smoking in the between-individual analysis (pooled odds ratio, 1.16; 95% CI, 1.05-1.28) and 57% increase in within-individual analysis (pooled odds ratio, 1.57; 95% CI, 1.32-1.86), after adjusting for changes in self-reported marital and working status, substantial worsening of financial situation, illness in the family, and own health status. Increase in distance to the nearest tobacco outlet was not associated with smoking relapse among the ex-smokers.

Conclusions and Relevance  These data suggest that increase in distance from home to the nearest tobacco outlet may increase quitting among smokers. No effect of change in distance on relapse in ex-smokers was observed.

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